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Arcing horns bushing insulator

Arcing horns protect bushings in case of the overvoltage.

Problem Type: 3D electrostatics.

Geometry: 3D import.

Given:
Relative permittivity of air ε0 = 1,
Relative permittivity of insulator εr = 6,
HV V = 6 kV (RMS).

Task:
Calculate electric field stress distribution along the bushing insulator surface and in the spark gap.

Solution:

Results:

Electric field distribution in the spark gap:

See the arcing_horns.pbm problem in the Examples folder.